參數(shù)資料
型號(hào)： T89C51IC2-RLTIM
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： 8-bit Microcontroller with Flash and I2C Interface
中文描述： 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP44
封裝： 1.40 MM HEIGHT, VQFP-44
文件頁數(shù)： 67/170頁
文件大?。?/td> 1927K
代理商： T89C51IC2-RLTIM
67
A/T89C51CC01
4129L–CAN–08/05
Table 41.
TMOD Register
TMOD (S:89h)
Timer/Counter Mode Control Register
Notes: 1. Reloaded from TH1 at overflow.
2. Reloaded from TH0 at overflow.
Reset Value = 0000 0000b
7
6
5
4
3
2
1
0
GATE1
C/T1#
M11
M01
GATE0
C/T0#
M10
M00
Bit
Number
Bit
Mnemonic
Description
7
GATE1
Timer 1 Gating Control Bit
Clear to enable Timer 1 whenever TR1 bit is set.
Set to enable Timer 1 only while INT1# pin is high and TR1 bit is set.
6
C/T1#
Timer 1 Counter/Timer Select Bit
Clear for Timer operation: Timer 1 counts the divided-down system clock.
Set for Counter operation: Timer 1 counts negative transitions on external pin T1.
5
M11
Timer 1 Mode Select Bits
M11 M01
0
0
0
1
1
0
1
1
Operating mode
Mode 0: 8-bit Timer/Counter (TH1) with 5-bit prescaler (TL1).
Mode 1: 16-bit Timer/Counter.
Mode 2: 8-bit auto-reload Timer/Counter (TL1)
(1)
Mode 3: Timer 1 halted. Retains count
4
M01
3
GATE0
Timer 0 Gating Control Bit
Clear to enable Timer 0 whenever TR0 bit is set.
Set to enable Timer/Counter 0 only while INT0# pin is high and TR0 bit is set.
2
C/T0#
Timer 0 Counter/Timer Select Bit
Clear for Timer operation: Timer 0 counts the divided-down system clock.
Set for Counter operation: Timer 0 counts negative transitions on external pin T0.
1
M10
Timer 0 Mode Select Bit
M10 M00
0
0
0
1
1
0
1 1
TH0 is an 8-bit Timer using Timer 1’s TR0 and TF0 bits.
Operating mode
Mode 0: 8-bit Timer/Counter (TH0) with 5-bit prescaler (TL0).
Mode 1: 16-bit Timer/Counter.
Mode 2: 8-bit auto-reload Timer/Counter (TL0)
(2)
Mode 3: TL0 is an 8-bit Timer/Counter
0
M00
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T89C51IC2-SLSCM 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller with Flash and I2C Interface
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T89C51IC2-SLSIM 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller with Flash and I2C Interface
T89C51RB2 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller with 16K/ 32K Bytes Flash
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